Molding-machine.



N0 MODEL.

J. REID, JR.

PATENTED SEPT. 1 1904 MOLDING MACHINE.

APl LIUATION FILED JULY 8, 1902.

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No. 770,243. 'PATENTED SEPT. 13, 1904 J. REID, JR. MOLDING MAGHINE.

APPLIOATIONTILED JULY 8, 1902.

N0 MODEL. 2 SHEETSSHEET 2.

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- I Jame s ez'd'Jz' IPatented September 13, 1904.

PATENT rErcE.

JAMES REID, JR., OF WORCESTER, MASSACHUSETTS.

MOLDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 770,243, dated September 13, 1904.

Application filed July 8, 1902. Serial No. 114,714. (No model.)

To all whmn it may concern.-

Be it known that I, J AMES REID, J r., a citizen of the United States, residing at Worcester, in the county of Worcester and Commonwealth of Massachusetts, have invented a new and useful Improvement in Molding-Machines, of which the following is a specification, accompanied by drawings, forming a part of the same, in which Figure 1 is a view in perspective of my improved molding-machine. Fig. 2 is a view taken from the opposite side; and Figs. 3 and 1 are bottom plan and side views, respectively, of a mechanism for simultaneously and uniformly raising and lowering the bearings of the shafts.

Similar reference-figures refer to similar parts in the different views.

The object of my invention is to provide simple and effective mechanism for raising and lowering the stripping-frame of a moldingmachine uniformly throughout its length with the application of as little power as possible and from some centrally-located and accessible point within reach of the operator, so that the parts may be controlled with comparative ease.

A further object is to provide means for adjusting the shaft-bearings to different heights simultaneously for patterns of difierent sizes.

Referring to the accompanying drawings, 1 indicates the frame, supported on suitable legs 2 2. This frame is provided with the vertical, preferably h alf-round, guide-recesses 3 3 at each corner, and the stripping-frame 1 is provided with correspondingly shaped and located guides 5 5, fitted to and adapted to slide vertically in these recesses 3 3 to insure the true upward and downward movement of the stripping-frame and to afiord stops for it when it reaches its depressed position by their lower ends striking the frame 1 of the molding-niachine. Rock-shafts 6 6 are supported in bearings 7 7 on opposite sides of frame 1, and these shafts are provided at one end with gear-wheels 8 8, which are intermeshed, as shown in Fig. 2, to cause the two shafts to rotate in unison, whereas at their opposite ends the shafts have the cranks 9 9 keyed or otherwise secured thereon within reach of the two hands of the operator. Eccentrics 10 10,

preferably two in number, are secured on each shaft 6, and these are connected together by a cross-rod 11 to make them perfectly rigid. Mounted on the peripheries of'the eccentrics are the strap-heads 12 12, and these strapheads are provided with sleeves 13 13 at their upper ends. Sleeves 13 13 have an angular bore formed therethrough adapted to receive correspondingly shaped guide-bars 1 1 14:, which are secured by plates or other means 15 15 to the stripping-frame 4L and upon which said sleeves have a limited sliding movement between the abutments 16 16 of the strippingframe, which constitute stops therefor in the extreme upward and downward movements of the stripping-frame.

In operation the stripping-board is of course placed in the usual fashion on top of the machine and the pattern-board upon the stripping-frame. The stripping-frame is raised and lowered by the operator taking one of the cranks 9 9 in each hand and turning them toward each other to raise the stripping-frame and away from each other to lower it, the upward and downward movement of the stripping-frame being determined by the extent of endwise play of sleeves 13 13 between the stops 16 16.

As a means for adjusting the height of the stripping-frame or the bearings therefor I have shown the mechanism illustrated in Figs. 3 and 4, in which the bearings 7 7 which receive the shafts, are provided with screwthreaded stems 18 18, which extend through the bottom rail of frame 1 and brackets 19 19 therefor. Each stem is provided with a sprocket-wheel 20, around which a s procketchain 21 passes. A vertical shaft 22, which is adjustable in the slot 23 to take up tension in chain 21, is provided with a sprocket-wheel 24:, the teeth of which chain 21 also engages. This vertical shaft 22 has a bevel-pinion 25 thereon, and a main horizontally disposed drive-shaft 26 is provided with a bevel-pinion 27 the teeth of which engage pinion 25 whereby to communicate motion thereto. This drive-shaft is adapted to receive a crank or similar instrument on its outer squared end 28 when it is desired to turn it to cause the vertical shaft 22 to be rotated and by it to move chain 21 to simultaneously turn the four sprocket-wheelsQOQO and cause the stems 18 18 of the several bearings 7 7 to be raised or lowered, according to the way in which shaft 26 is turned. Jam-nuts 29 and 30 are of course first loosened to admit of this adjustment and then tightened to retain'the parts in position. Of course the position of the shafts 6 6 in the bearings 7 7 prevents the latter from turning during the adjustment. By the means described the two shafts are raised or lowered equally, uniformly, and simultaneousl y.

The raising and lowering of the shafts 6 6 is for the purpose of adjusting the vertical position of the pattern carried on the patternboard of the stripping-frame relatively to the stripping-board in order to vary the distance the pattern projects above the stripping-board when the pattern is raised to its highest position.

What I claim by my invention, and desire to secure by Letters Patent, is-

1. The combination with the frame of the machine, of a stripping-frame having a sliding connection therewith, and means for moving said stripping-frame, consisting of a rockshaft having eccentrics thereon and eccentricstraps mounted on said eccentrics, said eccentric-straps having a sliding connection with the stripping-frame at right angles to the sliding movement of said stripping-frame, substantially as described.

2. The combination with the fixed and movable frames of a molding-machine having a sliding connection with each other, of a pair of shafts, eccentrics mounted on said shafts, eccentric-straps mounted on said eccentrics and having a limited sliding connection with said movable frame and gears connecting said shafts, whereby they are made to turn in unison, substantially as described.

3. The combination with the frame of a molding-machine and a stripping-frame having sliding connection therein, said strippingframe having angular guide-bars connected therewith, of shafts connected with the frame of the machine and having eccentrics thereon, eccentric-straps mounted on these eccentrics, and havingsleeves with angular bores therein adapted to receive the angular guide-bars upon which they slide as the shafts are turned, whereby to raise and lower the strippingframe, substantially as described.

4:. The combination with the frame of a molding-machine and a stripping-frame having sliding connection therein, said strippingframe having angular guide-bars connected therewith, of shafts connected with the frame of the machine and having eccentrics thereon, eccentric-straps mounted on these eccentrics, and having sleeves with angular bores therein adapted to receive the angular guide-bars upon which they slide as the shafts are turned, whereby to raise and lower the strippingframe, and abutments at the ends of the guidebars for limiting the movement of the sleeves, and stopping the movement to cause a lock ing of the stripping-frame in either of its extreme positions, substantially as described.

5. The combination with the frame of a molding-machine having vertically-disposed guide-grooves therein, of a stripping-frame having guides fitted to said guide-grooves and adapted to move up and down therein, said frame having guide-bars secured thereto, of a pair of intergeared rock-shaftsjournaled in the frame of the machine and carrying eccentrics, and eccentric-straps mounted on these eccentrics and upon the guide-bars.

6. The combination with aframe and shafts mounted to turn thereon and carrying eccentrics, of a stripping-frame having sliding connection with the frame of the machine, eccentrio-straps mounted on eccentrics and having sliding connection with the stripping-frame whereby the shafts are turned to cause the' stripping-frame to be raised or lowered, and means for simultaneously raising or lowering the bearings of the shafts, substantially as described.

7. The combination with a frame and shafts mounted to turn thereon and carrying eccentrics, of a stripping-frame havingfsliding connection with the frame of the machine, eccentric-straps mounted on eccentrics and having sliding connection with the stripping-frame whereby the shafts are turned to cause the stripping-frame to be raised or lowered, and means for simultaneously raising or lowering the bearings of the shafts, said means consisting of stems and mechanism for simultaneously raising or lowering the stems endwise, substantially as described.

8. The combination with a frame and shafts mounted to turn thereon and carrying eccentrics, of a stripping-frame having sliding connection with the frame of the machine, eccentric-straps mounted on eccentrics and having sliding connection with the stripping-frame whereby the shafts are turned to cause the stripping-frame to be raised or lowered, and means for simultaneously raising or lowering the bearings of the shafts, said means consisting of threaded stems, sprocket-wheels mounted thereon, and sprocket-chain for simultaneously turning the several wheels to move the stems endwise, substantially as described.

9. The combination with a frame and shafts mounted to turn thereon and carrying eccentrics, of a stripping-frame having sliding connection with the frame of the machine, eccentric-straps mounted on eccentrics and having sliding connection with the stripping-frame whereby the shafts are turned to cause the stripping-frame to be raised or lowered, and means for simultaneously raising or lowering the bearings of the shafts, said means consisting of threaded stems, sprocket-wheels thereon, an endless sprocket-chain engaging the teeth of these wheels, a vertical shaft having a sprocket-wheel engaging the chain, said vertical shaft having a bevel-pinion, and a driveshaft having a bevel-pinion which meshes therewith for applying power, whereby the chain, sprocket-wheels and'bearings are simultaneously operated, substantially as described.

10. The combination with a frame and shafts mounted to turn thereon and carrying eccentrics, of a strippingframe having sliding connection with the frame of the machine, eccentric-straps mounted on eccentrics and having sliding connection with the stripping-frame whereby the shafts are turned to cause the stripping-frame to be raised or lowered, and means for simultaneously raising or lowering the bearings of the shafts, said means consisting of threaded stems, sprocket-wheels mounted thereon, and sprocket-chain for simultaneously turning the several wheels to move the stems endwise, and jam-nuts on the threaded stems for locking them in position, substantially as described.

11. In a molding-machine, the combination with a fixed frame adapted to support a stripping-board, of a reciprocating frame adapted to support a pattern-board, a rock-shaft operatively connected with said reciprocating frame, bearings for said rock-shaft supported by said fixed frame, and means for vertically adjusting said bearings to vary the position of said movable frame relatively to said fixedframe, substantially as described.

12. In a molding-machine, the combination with fixed and movable frames, of a pair of intergeared rock-shafts supported by the fixed frame and operatively connected with the movable frame, and means for the simultaneous vertical adjustment of said shafts, substantially as described.

Dated this 3d day of July, 1902.

JAMES REID, JR.

Witnesses:

RUFUs B. FOWLER, VERNON E. Honems. 

